In order to access a USB external hard drive, you may encounter the USB Device Not Recognized error. This article offers solutions to this issue.
Windows is unable to recognize a USB device that is connected to this computer because it is broken.
The USB driver that is currently installed has degraded or become faulty.
For problems that could conflict with Windows and a USB external hard drive, your computer needs to be updated.
Windows can be lacking other crucial updates or have hardware or software problems.
Your USB controllers may have deteriorated or become unstable.
It's possible that your external drive is in selective suspension.
Updated drivers might be required for your PC's motherboard.
Uninstall the external hard disc, then reinstall it.
When the USB driver that is currently loaded becomes unstable or corrupt, this technique fixes the problem
Enter Device Manager in the Search box after choosing Start.
Choose Device Manager from the list that was returned.
Disk Drives should be chosen from the list of hardware.
Select "Uninstall" by holding down the Control key while clicking the USB external hard disc that has the problem.
Unplug the USB cable after removing the hard disc.
After one minute, reattach the USB cable. The driver needs to load automatically.
In Windows Explorer, look for the USB drive.
If you plug your USB external hard drive into a non-powered USB hub, the external drive might not have enough power to function. Put it directly into your PC as an alternative. Proceed to resolution 2 if this approach does not resolve your problem.
Apply hotfixes to Windows 7 to remedy any problems that may be present.
This technique's hotfixes can address a problem with a USB external hard drive and Windows.
Visit KB976972. You run into issues when transferring data via USB from a PC running Windows 7 and equipped with an NVIDIA USB EHCI chipset and at least 4 GB of RAM.
Choose Download the update package that is appropriate for your version of Windows 7 under Update information.
If you are unclear about the Windows 7 version you are using, click the Start button and hold down the mouse button while selecting Computer > Properties.
You're using Windows 7 64-bit if 64-bit Operating System is shown next to the System type.
You are using the 32-bit (x86) edition of Windows 7 if 32-bit Operating System is mentioned next to the System type.
Choose Continue. Select Yes if a User Account Control permission request appears.
Select Open > Download.
Within 30 seconds, the download ought to begin. Select Start Download > Open if it doesn't.
To finish the download and installation, adhere to the on-screen directions.
Visit KB974476. When a USB device in Windows 7 restarts from the USB Selective Suspend state, the machine becomes unresponsive.
Review the licensing agreement if requested. I Accept should be selected if you accept the terms.
Enter your email in the boxes below after selecting the checkbox next to the Windows 7 version.
Select Request hotfix after entering the word verification.
Examine your email. Microsoft will send you an email with a download link for the hotfix soon. To download and install the hotfix, select the link and adhere to the prompts on the screen.
Switch off your computer.
Install the most recent Windows updates.
The most recent device drivers for your USB external hard drive will be installed using this procedure.
After clicking the Start button and entering "Windows Update" in the search box, you may choose Windows Update from the list of results.
To check for updates, choose. Select Review optional updates after the scan is finished.
Install updates after checking the box next to the updates.
Review the licensing agreement if asked, then click I Accept.
Download and install the updates by adhering to the on-screen directions.
Reboot your computer if requested.
If the issue persists, move on to resolution 4.
Also Read: How To Update Google Chrome
Reinstall USB controllers as the fourth solution
When the USB driver that is currently loaded becomes unstable or corrupt, this procedure fixes the problem.
Device Manager can be found by selecting Start, searching for it in the search bar, and then selecting it.
Expand the controllers for Universal Serial Bus. Select Uninstall by pressing and holding (or right-clicking) on a device. Repeat for every gadget.
Restart your computer after you're finished. Your USB controllers will be installed automatically.
If the issue is still present, move on to solution 5.
Disable the USB selective suspend setting (resolution 5)
Using this technique, you can stop your USB external drive from shutting down.
Choose a power plan after selecting the Start button, power plan, and the Search box.
Select Change Plan Settings next to the plan that is presently selected.
Choose Modify advanced power settings.
Expand USB Settings > USB Selective Suspend Settings by selecting the box.
Disabled is the third option on the drop-down menu after choosing Plugged in.
On a laptop, click Battery, then choose the drop-down menu, and finally click disabled.
Select OK > Apply.
You should move on to resolution 6 if this doesn't fix your problem.
Install the most recent chipset drivers for your motherboard.
By using this technique, you can get your computer to recognize your USB external hard drive by updating the motherboard's chipset drivers.
The manufacturer of the motherboard should be listed in the documentation for your computer.
Visit the support page for the manufacturer of your computer. See Computer manufacturers' contact information for a list of support websites for various computer manufacturers.
To find the correct drivers for your motherboard, search their website. Contact the maker of your computer for assistance.
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